Canada's National Advisory Committee on Immunization (NACI) says people should get another COVID-19 vaccine booster in the fall if it's been at least six months since their last dose or COVID-19 infection.
An additional dose with the latest vaccine formulation this Fall will help bolster protection that has waned over time. This is especially important for anyone at increased risk of severe disease from #COVID19. https://t.co/u4wRvhRaMp
— Dr. Theresa Tam (@CPHO_Canada) July 11, 2023
It says the booster doses will be new formulations updated to target more recent, immune-evasive variants.
NACI continues to strongly recommend that anyone five years of age and older who hasn't yet been vaccinated should be immunized with a primary two-dose series of an mRNA vaccine.
It also has a "discretionary recommendation" that children six months to five years of age who haven't yet been vaccinated get the two-dose primary series of an mRNA vaccine.
In June, NACI said that the bivalent mRNA vaccines can be used for people receiving their first two-dose vaccination series.
The mRNA vaccines available in Canada are manufactured by Pfizer-BioNTech and Moderna.
